69 lines
1.9 KiB
Text
69 lines
1.9 KiB
Text
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# -*- makefile -*-
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SHELL = /bin/sh
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VPATH = $(SRCDIR)
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# Binary utilities.
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# If the host appears to be x86, use the normal tools.
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# If it's x86-64, use the compiler and linker in 32-bit mode.
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# Otherwise assume cross-tools are installed as i386-elf-*.
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X86 = i.86\|pentium.*\|[pk][56]\|nexgen\|viac3\|6x86\|athlon.*\|i86pc
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X86_64 = x86_64
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ifneq (0, $(shell expr `uname -m` : '$(X86)'))
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CC = gcc
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LD = ld
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OBJCOPY = objcopy
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else
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ifneq (0, $(shell expr `uname -m` : '$(X86_64)'))
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ifneq (0, $(shell expr `uname -s` : 'Darwin'))
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CC = i386-elf-gcc
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LD = i386-elf-ld
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AR = i386-elf-ar
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RANLIB = i386-elf-ranlib
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OBJCOPY = i386-elf-objcopy
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else
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CC = gcc -m32 -fno-stack-protector
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LD = ld -melf_i386
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AR = ar
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RANLIB = ranlib
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OBJCOPY = objcopy
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endif
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else
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CC = i386-elf-gcc
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LD = i386-elf-ld
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AR = i386-elf-ar
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RANLIB = i386-elf-ranlib
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OBJCOPY = i386-elf-objcopy
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endif
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endif
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ifeq ($(strip $(shell command -v $(CC) 2> /dev/null)),)
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$(warning *** Compiler ($(CC)) not found. Did you set $$PATH properly? Please refer to the Getting Started section in the documentation for details. ***)
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endif
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# Compiler and assembler invocation.
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DEFINES =
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WARNINGS = -Wall -W -Wstrict-prototypes -Wmissing-prototypes -Wsystem-headers
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CFLAGS = -g -msoft-float -O
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CPPFLAGS = -nostdinc -I$(SRCDIR) -I$(SRCDIR)/lib
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ASFLAGS = -Wa,--gstabs
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LDFLAGS =
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DEPS = -MMD -MF $(@:.o=.d)
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# Turn off -fstack-protector, which we don't support.
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ifeq ($(strip $(shell echo | $(CC) -fno-stack-protector -E - > /dev/null 2>&1; echo $$?)),0)
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CFLAGS += -fno-stack-protector
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endif
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# Turn off --build-id in the linker, which confuses the Pintos loader.
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ifeq ($(strip $(shell $(LD) --help | grep -q build-id; echo $$?)),0)
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LDFLAGS += -Wl,--build-id=none
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endif
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%.o: %.c
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$(CC) -c $< -o $@ $(CFLAGS) $(CPPFLAGS) $(WARNINGS) $(DEFINES) $(DEPS)
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%.o: %.S
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$(CC) -c $< -o $@ $(ASFLAGS) $(CPPFLAGS) $(DEFINES) $(DEPS)
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